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Certificates overview

Certificates overview

Certificates are also referrred to as certs, .pem or X509.

 

PEM versus CRT
These 2 extensions designate the same certificates.
The .CRT files may be binaries or ASCII / the .PEM files are ASCII
It is possible to open a .CRT file on Windows™ with a double click / not a .PEM  file

CHAIN
The CHAIN certificates are more complete
They contain all certificates from the root (certificate of the highest certification authority),
diwn to the one from the authority issuing the certificate for the given hardware (Doremi in the case of a Cinema server) through certificates of all midscale organisations.
Some Wrapping software need the CHAIN certs (Cinecert) / others no (DMS2000)
Some companies (Fox) require using the CHAIN certificates to generate KDM’s

Doremi certificates are all now .PEM
PEM definition: acronym of Privacy Enhanced Mail. It’s a safe mail standard (since RFC 1421 to 1424).

MPEG / SHA1 / SHA256

MPEG certificates are for Mpeg encoding (not anymore used in any serious D-Cinema encoding.

SHA1 is now obsolete (Mpeg cert is in fact a Sha1 based encoding)

SHA256 is the certificate now required for KDM generation for JPEG2000 content.

Its security level for SHA256 is much higher than Sha1.

Last Updated on Friday, 07 December 2012 13:02

 

Version Map

Digital Cinema Player

Dolphin DCI 1.0
SW 2.8.20
FW 21.04n (non CTP)

Dolphin DCI 1.2
SW 2.8.20
SM 2.1.106
FW 21.02k (non CTP)
FW 21.03z

IMB
SW 2.8.20
SM 5.1.112
FW 30.11b

IMS1000
SW 2.6.7
SM 6.1.133
FW 4.6.6

IMS2000
SW 2.8.20
SM 6.1.133
FW 4.6.6

IMS3000
Bundle 3.1.14

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